ARCHIVED - Persistent centipede errors on sign on after being able to play without issue

[b]Update: If you have been blocked by recurring Centipede errors after having been able to play successfully (#3 below), we are applying a fix that will resolve the issue. Unfortunately, the solution will reset your characters. This is expected to happen over the next few hours. [/b]
WORKAROUND: To ensure that you no longer hit this issue, do not delete characters after using the vault in the tower.
Original Post:
We've been investigating the reports of centipede errors that have been popping up on the forums. There are a few ways you can hit centipede errors.
1. I have never connected and get centipede when I try to sign on
2. I randomly get centipede when I play
[b][u]3. I was able to play just fine, and all of a sudden I get centipede errors all the time and can't sign in[/u].[/b]
1 and 2 appear to be networking issues. This thread is concerned with [b]#3[/b].
#3 is an issue that we're tracking internally that I want to get more info about. Based on user reports and assistance, we identified a timing issue having to do with swapping quickly items between characters using the tower vault. We applied a fix and did some fixup of a number of affected users. However, not all affected users could be fixed up. So we're continuing to investigate solutions. We suspect there may be more ways to hit this error, and we need your help to find them.
If you were at some point able to play [b]after the maintenance period[/b], but then were blocked from signing on due to centipede errors, please reply to this post with the following:
1. Gamertag / Online ID of all affected profiles (send this to me in a PM if you're not comfortable posting this information publicly)
2. What was the last time you were able to properly sign in and play (date, time and time zone)
3. What was the last time you tried to sign in and got centipedes (date, time and time zone)
4. Had you used the account vault at all between being able to play and seeing persistent centipedes?
5. Have you deleted any characters between being able to play and seeing persistent centipedes?
6. if you had not done 4 or 5, please give as detailed an account of your play between when you last played, and when you started seeing centipede errors.